#!/bin/bash

INTERFACES=("vmbr0" "vmbr1" "eno1" "enp1s0")

echo "==> Aplicando arp_filter..."
for iface in "${INTERFACES[@]}"; do
  if [ -f "/proc/sys/net/ipv4/conf/$iface/arp_filter" ]; then
    echo 1 > "/proc/sys/net/ipv4/conf/$iface/arp_filter"
  fi
done

echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
echo 1 > /proc/sys/net/ipv4/conf/default/arp_filter

SYSCTL_FILE="/etc/sysctl.conf"
for iface in "${INTERFACES[@]}" all default; do
  grep -q "net.ipv4.conf.$iface.arp_filter" "$SYSCTL_FILE" ||     echo "net.ipv4.conf.$iface.arp_filter = 1" >> "$SYSCTL_FILE"
done

sysctl -p
echo "==> Configuración de arp_filter aplicada correctamente."